Aoycocr U3 UK Smart Plug - BK7231T Convert to OpenBeken

digital-cipher wrote:

I was expecting an ESP8266 like all the other Aoycocr UK smart plugs I had brought in the past.

Oh no, yet another one migrated? Don't worry, I am here to help. OBK is under active development and, for example, our team member @iprak is adding Home Assistant discovery just as we speak (it's already working for simple devices and RGB/RGBCW bulbs, power metering sockets are up next!).

Did you submit the device template to online database?
https://github.com/OpenBekenIOT/webapp/blob/gh-pages/devices.json

That's a strange module, WB3? Do I see correctly? I haven't seen that one yet.

Thank you for the teardown. For the record, because links tends to expire after some time, I'll post here some screenshots from Amazon offer:


Wait wait wait a minute.. I just spotted something interesting, here:

I think that "Bluetooth" keyword here might be an indicator of ESP to BK swap, because ESP8266 has no BT a BK7231 has.

Btw, do you have a firmware backup for further analysis by Tuya-cloudcutter team?

Hi p.kaczmarek2

Yes I spent some hours researching this BK module, all the others I could see online had the antenna on the top but this one is on the side and on the board, some pins are marked up as spi.

Yes that's a good spot for others, if the device says upgraded with Bluetooth then yes it's not an ESP8266 on board so it's got a good chance its a BK7231T or N

I didn't take a backup of the original firmware as I'm unsure how to do this, but I followed the Python script instructions and it programmed the first time (after having tried Beken Writer V1.60 for too many hours )

I have no idea about submitting the template to "https://github.com/OpenBekenIOT/webapp/blob/gh-pages/devices.json", I'm not a Git person, but from looking at the device.json page my device would be



Getting the device into Home Assistant using the onboard HASSIO template generator was super easy,

One thing that may help other newbies like me if there was a way to run a script on the device to help see which pins are used, such as the relay, button and LED.
Something like, pulse each pin until you hear the relay click or see the led flash

I just manually changed each pin until I found each entity

That''s a good idea, I might look into that.

I have submitted your device information to the global templates list. It should be available soon online. Thank you!

Hmmm, interesting